82680747 has 8 divisors (see below), whose sum is σ = 111886656. Its totient is φ = 54297672.

The previous prime is 82680743. The next prime is 82680757. The reversal of 82680747 is 74708628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82680747 - 2² = 82680743 is a prime.

It is a super-2 number, since 2×82680747² = 13672211848956018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82680699 and 82680708.

It is not an unprimeable number, because it can be changed into a prime (82680743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205473 + ... + 205874.

It is an arithmetic number, because the mean of its divisors is an integer number (13985832).

Almost surely, 2^82680747 is an apocalyptic number.

82680747 is a deficient number, since it is larger than the sum of its proper divisors (29205909).

82680747 is a wasteful number, since it uses less digits than its factorization.

82680747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411417.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 82680747 is about 9092.8954134533. The cubic root of 82680747 is about 435.6470697609.

The spelling of 82680747 in words is "eighty-two million, six hundred eighty thousand, seven hundred forty-seven".